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Efficacy of Different Coloured Sticky Traps Against Thrips of Chilli

M.M. Hossain
Scientific Officer
Spices Research Centre, BARI, Shibganj, Bogura, Bangladesh

K. M. Khalequzzaman
Principal Scientific Officer (Plant Pathology)
Spices Research Centre, BARI, Shibganj, Bogura, Bangladesh

M. S. Alam
AEO
DAE, Kaunia, Rangpur, Bangladesh

M. T. R. Mondal
Scientific Officer
BINA, Mymensingh, Bangladesh

M. M. Islam
Senior Scientific Officer
Plant Pathology Division, Bangladesh Agricultural Research Institute, Gazipur-1701, Bangladesh

Abstract/ Executive Summary:

The field experiment was conducted at Spices Research Centre, BARI, Shibganj, Bogura, Bangladesh during Rabi season of 2017-18 to study the color preference of Scirtothrips dorsalis in chilli. The treatments were T₁= Blue trap@40 trap/ha; T₂= Yellow trap @40 trap/ha; T₃= White trap @40 trap/ha; T₄=Green trap @40 trap/ha and T₅= Pink trap @40 trap/ha. Among the color traps used, at 35 days after installation (DAI) of trap blue color attracted highest (8.44 thrips/sq. inch area of trap) number of S. dorsalis adults followed by white (5.43 thrips/sq. inch area of trap), yellow (4.30 thrips/sq. inch area of trap), green (3.52 thrips/sq. inch area of trap) and pink (3.40 thrips/ sq. inch area of trap) color. Blue coloured sticky trap also attracted comparatively a smaller number of beneficial insects and can be used for relative estimate of S. dorsalis population and also for monitoring and mass trapping as a component of IPM program.

Keywords: Efficacy, Sticky trap, Thrips, Chilli

Location: Spices Research Centre, BARI, Shibganj, Bogura

Start Date: 15-08-2017

End Date: 20-05-2018

Program Area: Pest Management

Commodity: IPM, Chilli

Objectives:

To determine the preference of Scirtothrips dorsalis on various coloured sticky traps against Thrips Of Chilli.

Methodology:

The study was conducted at Spices Research Centre, BARI, Shibganj, Bogura, Bangladesh (geographic coordinates 25.0167° N, 89.3167° E) during Rabi season of 2017-18. The experimental plot was prepared with five ploughings and cross ploughings followed by laddering to break the clods as well as to level the soil. The weeds and stubbles of previous crops were collected and removed from the soil. The unit plot size was 3 m × 1.5 m and spacing was 50 cm × 50 cm. The treatments were T₁= Blue trap @40 trap/ha; T₂= Yellow trap @40 trap/ha; T₃= White trap @40 trap/ha; T₄= Green trap @40 trap/ha and T₅= Pink trap @40 trap/ha. Treatments were assigned in a randomized complete block design with three replications. BARI Morich-3 was used as test crop for this trial. Thirty-five days old seedlings were transplanted on 02 November 2017. In addition to 5 t/ha of cow dung, the crop was fertilized with N₁₂₀ P₆₀ K₁₀₀ S₂₀ B₂ kg/ha. The entire amount of cow dung, P, S, B and 1/3 of K was applied during final land preparation. The N and rest K were applied in 3 equal splits at 25, 50 and 70 days after sowing (DAS). Three weeding were done at 25, 50 and 75 days after sowing and three irrigation were done at 10-20 days interval during vegetative growth stage. To control Anthracnose of chilli, the crop was sprayed with Tilt 250EC @ 0.5ml/L of water at 65 DAS. Depending on the maturity, the red ripe chilli was harvested from February, 2017 and completed on 02 May, 2018. The whole experimental plot was kept free from spraying of any insecticide. Thrips which were stuck on coloured sticky traps were counted from ten square grids measuring 1 square inch per grid by using hand held magnifying glass. Observation on the beneficial insects like coccinellid predators and honey bees that stuck on the traps was also counted. Observations were taken at seven days interval commencing from 7 DAI (days after installation) till 35 DAI. The recorded data were analyzed and mean values were adjusted and separated by Duncan’s Multiple Range Test (DMRT) according to Gomez and Gomez (1984).

Source of Information: International Journal of Applied Sciences and Biotechnology, 8(2): 187-190, 2020

Article Link (Online Journal): https://www.nepjol.info/index.php/IJASBT/article/view/29580/23815

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Blue coloured traps were found more effective in trapping Scirtothrips dorsalis as compared to yellow, white and green and pink trap. Use of blue coloured sticky traps may not be solely able to restrict the buildup of thrips population during the entire crop growing period. However, they can be integrated with other components of IPM program where detection and monitoring of thrips population is an integral part to decide upon commencement of pesticide application.

Knowledge Management: Journal